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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 25 
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 26 
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
 27 
#
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 28 
 
- 
 
 29 
#include <arch/boot/boot.h>
- 
 
 30 
#include <arch/boot/memmap.h>
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#include <arch/mm/page.h>
31 
#include <arch/mm/page.h>
30 
#include <arch/mm/ptl.h>
 32 
#include <arch/mm/ptl.h>
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#include <arch/pm.h>
 33 
#include <arch/pm.h>
32 
#include <arch/cpu.h>
 34 
#include <arch/cpu.h>
33 
#include <arch/cpuid.h>
 35 
#include <arch/cpuid.h>
34 
#include <arch/boot/boot.h>
 - 
 
35 
 
 36 
 
36 
#define START_STACK	(BOOT_OFFSET - BOOT_STACK_SIZE)
 37 
#define START_STACK	(BOOT_OFFSET - BOOT_STACK_SIZE)
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#define START_STACK_64  0xffffffff80007c00
 - 
 
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38
39 
.section K_TEXT_START, "ax"
 39 
.section K_TEXT_START, "ax"
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# .code16
 40 
# .code16
41 
# .global kernel_image_start
 41 
# .global kernel_image_start
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# .global multiboot_image_start
 42 
# .global multiboot_image_start
43 
# kernel_image_start:
 43 
# kernel_image_start:
44 
# 	cli
 - 
 
45 
# 	xorw %ax,%ax
 - 
 
46 
# 	movw %ax,%ds
 - 
 
47 
# 	movw %ax,%es
 - 
 
48 
# 	movw %ax,%ss            # initialize stack segment register
 - 
 
49 
# 	movl $(START_STACK), %esp	# initialize stack pointer
 - 
 
50 
#
44 
 
51 
# 	call memmap_arch_init
 - 
 
52 
#
- 
 
53 
# 	movl $0x80000000, %eax
45 
# 	movl $0x80000000, %eax
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# 	cpuid
 46 
# 	cpuid
55 
# 	cmp $0x80000000, %eax 	# any function > 80000000h?
 47 
# 	cmp $0x80000000, %eax 	# any function > 80000000h?
56 
# 	jbe no_long_mode
 48 
# 	jbe no_long_mode
57 
# 	movl $(AMD_CPUID_EXTENDED), %eax # Extended function code 80000001
 49 
# 	movl $(AMD_CPUID_EXTENDED), %eax # Extended function code 80000001
58 
# 	cpuid
 50 
# 	cpuid
59 
# 	bt $29, %edx 		# Test if long mode is supported.
 51 
# 	bt $29, %edx 		# Test if long mode is supported.
60 
# 	jnc no_long_mode
 52 
# 	jnc no_long_mode
61 
#
53 
#
62 
# 	# Load gdtr, idtr
 - 
 
63 
# 	lgdt real_bootstrap_gdtr_boot
 - 
 
64 
#
- 
 
65 
# 	movl %cr0,%eax
 - 
 
66 
# 	orl $0x1,%eax
 - 
 
67 
# 	movl %eax,%cr0			# switch to protected mode
 - 
 
68 
#
- 
 
69 
# 	jmpl $gdtselector(KTEXT32_DES), $now_in_prot
 - 
 
70 
#
54 
#
71 
# no_long_mode:
 55 
# no_long_mode:
72 
# 1:
 56 
# 1:
73 
# 	jmp 1b
 57 
# 	jmp 1b
74 
#
58 
#
75 
.code32
 59 
.code32
76 
.align 4
 60 
.align 4
- 
 
 61 
.global multiboot_image_start
77 
multiboot_header:
 62 
multiboot_header:
78 
	.long MULTIBOOT_HEADER_MAGIC
 63 
	.long MULTIBOOT_HEADER_MAGIC
79 
	.long MULTIBOOT_HEADER_FLAGS
 64 
	.long MULTIBOOT_HEADER_FLAGS
80 
	.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)	# checksum
 65 
	.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)	# checksum
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	.long multiboot_header
 66 
	.long multiboot_header
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	.long 0
 68 
	.long 0
84 
	.long 0
 69 
	.long 0
85 
	.long multiboot_image_start
 70 
	.long multiboot_image_start
86 
 
 71 
 
87 
multiboot_image_start:
 72 
multiboot_image_start:
88 
	movl $START_STACK, %esp				# initialize stack pointer
 73 
	movl $START_STACK, %esp			# initialize stack pointer
89
- 
 
90 
	lgdt protected_bootstrap_gdtr + BOOT_OFFSET		# initialize Global Descriptor Table register
 74 
	lgdt bootstrap_gdtr				# initialize Global Descriptor Table register
91 
 
 75 
 
92 
	movw $gdtselector(KDATA_DES), %cx
 76 
	movw $gdtselector(KDATA_DES), %cx
93 
	movw %cx, %es
 77 
	movw %cx, %es
94 
	movw %cx, %gs
 78 
	movw %cx, %gs
95 
	movw %cx, %fs
 79 
	movw %cx, %fs
96 
	movw %cx, %ds							# kernel data + stack
 80 
	movw %cx, %ds							# kernel data + stack
97 
	movw %cx, %ss
 81 
	movw %cx, %ss
98
82
99 
	jmpl $gdtselector(KTEXT_DES), $multiboot_meeting_point + BOOT_OFFSET
 83 
	jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point
100 
	multiboot_meeting_point:
 84 
	multiboot_meeting_point:
101
85
- 
 
 86 
	movl %eax, grub_eax							# save parameters from GRUB
- 
 
 87 
	movl %ebx, grub_ebx
- 
 
 88
102 
	# Protected 32-bit. We want to reuse the code-seg descriptor,
 89 
	# Protected 32-bit. We want to reuse the code-seg descriptor,
103 
	# the Default operand size must not be 1 when entering long mode
 90 
	# the Default operand size must not be 1 when entering long mode
104
91
105 
	pushl %ebx							# save parameters from GRUB
 - 
 
106 
	pushl %eax
 - 
 
107
- 
 
108 
	# Enable 64-bit page transaltion entries - CR4.PAE = 1.
 92 
	# Enable 64-bit page transaltion entries - CR4.PAE = 1.
109 
	# Paging is not enabled until after long mode is enabled
 93 
	# Paging is not enabled until after long mode is enabled
110
94
111 
	movl %cr4, %eax
 95 
	movl %cr4, %eax
112 
	btsl $5, %eax
 96 
	btsl $5, %eax
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135 
	jmpl $gdtselector(KTEXT_DES), $start64
 119 
	jmpl $gdtselector(KTEXT_DES), $start64
136 
 
 120 
 
137 
.code64
 121 
.code64
138 
start64:
 122 
start64:
139 
	movq $(PA2KA(START_STACK)), %rsp
 123 
	movq $(PA2KA(START_STACK)), %rsp
- 
 
 124 
	movl grub_eax, %eax
- 
 
 125 
	movl grub_ebx, %ebx
- 
 
 126
- 
 
 127 
	cmpl $MULTIBOOT_LOADER_MAGIC, %eax				# compare GRUB signature
- 
 
 128 
	je valid_boot
- 
 
 129
- 
 
 130 
		xorl %ecx, %ecx							# no memory size or map available
- 
 
 131 
		movl %ecx, e801memorysize
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 132 
		movl %ecx, e820counter
- 
 
 133
- 
 
 134 
		jmp invalid_boot
- 
 
 135
- 
 
 136 
	valid_boot:
- 
 
 137
- 
 
 138 
		movl (%ebx), %eax						# ebx = physical address of struct multiboot_info
- 
 
 139
- 
 
 140 
		bt $0, %eax								# mbi->flags[0] (mem_lower, mem_upper valid)
- 
 
 141 
		jc mem_valid
- 
 
 142
- 
 
 143 
			xorl %ecx, %ecx
- 
 
 144 
			jmp mem_invalid
- 
 
 145
- 
 
 146 
		mem_valid:
- 
 
 147 
		movl 4(%ebx), %ecx						# mbi->mem_lower
- 
 
 148 
		addl 8(%ebx), %ecx						# mbi->mem_upper
- 
 
 149
- 
 
 150 
		mem_invalid:
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 151 
		movl %ecx, e801memorysize
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 152
- 
 
 153 
		bt $3, %eax								# mbi->flags[3] (mods_count, mods_addr valid)
- 
 
 154 
		jc mods_valid
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 155
- 
 
 156 
			xorl %ecx, %ecx
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 157 
			xorl %edx, %edx
- 
 
 158 
			jmp mods_invalid
- 
 
 159
- 
 
 160 
		mods_valid:
- 
 
 161 
		movl 20(%ebx), %ecx						# mbi->mods_count
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 162 
		cmpl $0, %ecx
- 
 
 163 
		je mods_invalid
- 
 
 164
- 
 
 165 
		movl 24(%ebx), %esi						# mbi->mods_addr
- 
 
 166 
		movl 0(%esi), %edx						# mods->mod_start
- 
 
 167 
		movl 4(%esi), %ecx						# mods->mod_end
- 
 
 168 
		subl %edx, %ecx
- 
 
 169 
		addl $0x80000000, %edx
- 
 
 170
- 
 
 171 
		mods_invalid:
- 
 
 172 
		movl %ecx, init_size
- 
 
 173 
		movl %edx, init_addr
- 
 
 174
- 
 
 175 
		bt $6, %eax								# mbi->flags[6] (mmap_length, mmap_addr valid)
- 
 
 176 
		jc mmap_valid
- 
 
 177
- 
 
 178 
			xorl %edx, %edx
- 
 
 179 
			jmp mmap_invalid
- 
 
 180
- 
 
 181 
		mmap_valid:
- 
 
 182 
		movl 44(%ebx), %ecx						# mbi->mmap_length
- 
 
 183 
		movl 48(%ebx), %esi						# mbi->mmap_addr
- 
 
 184 
		movq $e820table, %rdi
- 
 
 185 
		xorl %edx, %edx
- 
 
 186
- 
 
 187 
		mmap_loop:
- 
 
 188 
			cmpl $0, %ecx
- 
 
 189 
			jle mmap_end
- 
 
 190
- 
 
 191 
			movl 4(%esi), %eax					# mmap->base_addr_low
- 
 
 192 
			movl %eax, (%rdi)
- 
 
 193
- 
 
 194 
			movl 8(%esi), %eax					# mmap->base_addr_high
- 
 
 195 
			movl %eax, 4(%rdi)
- 
 
 196
- 
 
 197 
			movl 12(%esi), %eax					# mmap->length_low
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 198 
			movl %eax, 8(%rdi)
- 
 
 199
- 
 
 200 
			movl 16(%esi), %eax					# mmap->length_high
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 201 
			movl %eax, 12(%rdi)
- 
 
 202
- 
 
 203 
			movl 20(%esi), %eax					# mmap->type
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 204 
			movl %eax, 16(%rdi)
- 
 
 205
- 
 
 206 
			movl (%esi), %eax					# mmap->size
- 
 
 207 
			addl $0x4, %eax
- 
 
 208 
			addl %eax, %esi
- 
 
 209 
			subl %eax, %ecx
- 
 
 210 
			addq $MEMMAP_E820_RECORD_SIZE, %rdi
- 
 
 211 
			incl %edx
- 
 
 212 
			jmp mmap_loop
- 
 
 213
- 
 
 214 
		mmap_end:
- 
 
 215
- 
 
 216 
		mmap_invalid:
- 
 
 217 
		movl %edx, e820counter
- 
 
 218
- 
 
 219 
	invalid_boot:
140 
 
 220
141 
	call main_bsp   # never returns
 221 
	call main_bsp   # never returns
142
222
143 
	cli
 223 
	cli
144 
	hlt
 224 
	hlt
145
225
Line 195... Line 275...
195 
ptl_0:
 275 
ptl_0:
196 
	.quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
 276 
	.quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
197 
	.fill 510,8,0
 277 
	.fill 510,8,0
198 
	.quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
 278 
	.quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
199 
 
 279 
 
200 
.global protected_bootstrap_gdtr
 280 
.global bootstrap_gdtr
201 
protected_bootstrap_gdtr:
 281 
bootstrap_gdtr:
202 
	.word gdtselector(GDT_ITEMS)
 282 
	.word gdtselector(GDT_ITEMS)
203 
	.long KA2PA(gdt)
 283 
	.long KA2PA(gdt)
- 
 
 284 
 
- 
 
 285 
grub_eax:
- 
 
 286 
	.long 0
- 
 
 287 
 
- 
 
 288 
grub_ebx:
- 
 
 289 
	.long 0